Ati AMD has released a new version of its graphics drivers that fix some long overdue bugs. "Today it's now time where the fglrx driver reaches yet another milestone. Not only does today's release address many of the outstanding bugs for the earlier GPU generations while also introducing a few new features, but it also delivers AIGLX support! Yes, you read that right. You can finally run your ATI graphics card with the fglrx driver and run Compiz, Beryl, or Compiz Fusion without using XGL!"

I don't know what I'm doing wrong, but this driver is really slow under Ubuntu, noticeably slower than the same setup using XGL.

fgl_glxgears also shows noticeable flicker. However, it does have fully working AIGLX so AMD did deliver on this promise, I can confirm it. Also, take my report of slowness with a shaker of salt since I may have my xorg.conf misconfigured or something.